LB1 High Performance New Super Cooling Fan for Microsoft Surface Pro 3 Core i5 3-Fan Cooling System Cooling Pad with Ergonomic 6-Level Adjustable Screen Height Slim and smart design of the cooling pad system with large, high-performance and extra quiet 3 built-in fans. 6 Levels adjustable screen height, tilt and swivel for optimal viewing and ergonomic comfort. Extremely heavy duty construction of the cooling pad to afford any weight or pressure. Power source supported easily by the Plug-and-Play USB connection as a self-power mode. Convenient and comfortable to carry - no need for any installation. Air Flow: 28 CFM | Powered by 1 USB cable | Plug-and-play: no drivers or software needed | Rated Voltage: DC 5V | Speed: 1500-2300 RPM | USB Port: 4 | Noise level: 25 dBA | Dimensions: 11 x 13 x 1.6 inches 100% Customer Satisfaction. Fast Same-Day Shipping by 12:00 PM PDT. 30-Day Money Back Guarantee. 12 Months Warranty. Exclusive $100000 Product Protection Plan! Satisfies Government - School - Health care enterprise and Corporate account purchase order requirements.